Machines for use in the manufacture of wedge heels



Feb. 4, 1958 E. E. JolNER, JR-

MACHINES FOR USEl IN THEMANUFACTURE OF WEDGE HEELS Filed Jan. 31, 1956 5Sheets-Sheet 1 UNCLMP//UG SWITCH .w vr-wr www nm wf .i E A 40 M JH w wwwi/,Hp 1 2 M m l. 221 A POWER SWITCH SLIDE '5 T'QP SWITCH 2,822,007MACHINES FOR USE IN THE MANUEACEUREOF wEDE HEELs Feb. 4? 1958 E. E.JOINER, JR

5 Sheets-'Sheet 2 Filed Jan. :51, 1956 Feb. 4, 1958 E. E. JolNER, JR2,822,007

MACHINES FOR USE 1N THE MANUEACTURE 0E wEDGE HEELs Filed Jan. 31:, 195e5 sheets-sheet s nvn for E. Edger- E Joiner', Jr:

Feb. 4, 1958 E. E. JOINER, JR

MACHINES FOR USE IN THE MANUFACTURE OF' WEDGE HEELS 5 Sheets-Sheet 4Filed Jan. 31, 195e @ihii -m V E M, www NW NNW Feb. 4, 1958 E. E.JolNER, JR

MACHINES FOR USE IN THE MANUFACTURE OF' WEDGE HEELS 5 Sheets-Sheet 5Filed Jan. 3l, 1956 United States vPat@entfice 2,822,007 Patented Feb.4, 1958 MACHINES FOR USE IN THE MANUFACTURE OF WEDGE HEELS Edgar E.Joiner, Jr., Andover, Mass., assignor to United Shoe MachineryCorporation, Flemington, N. l., a corporation of `New Jersey ApplicationJanuary 31, 1956, Serial No. 562,456

15 Claims. (Cl. 144134) machine and is adapted to remove material fromthe for-- ward end of a wood heel block to trim said block to the properlength and simultaneously therewith to form a notch or rabbet in theforward portion of the shank of the heel block.

It is an object of the present invention to provide an improved machinein which wedgeheel blocks may be automatically nipped and notchedquickly and eifectively with a minimum amount of effort on the part ofthe operator. The present invention consists in the novel featureshereinafter described, reference being had to the accompanying drawingswhich illustrate one embodiment of the invention selected for purposesof illustration, said invention being fully disclosed in thefollowingdescription.

In the drawings,

Fig. 1 is a front view of the illustrative machine portions of whichhave been broken away;

Fig. 2 is a section on the line II-II of Fig. 3;

Fig. 3 shows portions of the machine partly in side elevation and partlyin section on the line III-III of Fig 7;

Fig. 4 is a perspective view of a wedge heel block which has beenoperated upon by the illustrative machine, portions ofthe original blockwhich have been removed by the machine being shown in dash lines;

Fig. 5 is a perspective view showing a wedge heel which has been formedfrom the wedge heelblock shown in Fig. 4;

Fig. 6 shows, in front elevation, a portion of the illustrative machineon an enlarged scale;

Fig. 7 is aplan view of a portion of the machine shown in Fig. 6;

Fig. 8 is a view on the line VIII-VIII of Fig. 1;

Fig. 9 is a section on the line IX--IX of Fig. 8;

Fig. l is a wiring diagram for use in describing the operation of themachine; and

Fig. 11 is a View showing in detail one type of impulse switch which maybe advantageously used inthe machine.

The illustrative machine is adapted simultaneously to remove materialfrom the forward end of a Wood wedge heel block 20 to trim the block tothe proper length by forming a forward face 22 (Fig. 4) and to formon'the block adjacent to said face a rabbet or notch 24 having a floor26. The wedge heel block, which has been operated upon by theillustrative machine and will be identied by reference numeral 20a, issubsequently turned, tunneled and has its heel seat and shank breastedto provide a wedge heel 20b (Fig. 5) adapted to be attached to a sliplasted shoe (not shown). In the finished shoe the rabbet or notch 24,which is formed at the forward portion of the shank of the wedge heelblock, receives the rear end portion of a platform (not shown) of theshoe, a common outsole being applied tothe bottom of the platform andtothe bottom of the heel.

The illustrative machine comprises a carrier slide 28 (Figs. l, 3, 6 and7) upon which the wedge heel block 20 is positioned, by meanshereinafter described, and is secured to the slide by a clamp 30 alsomounted on the slide. The carrier slide 28 is supported by a guide orguide table 32 and is guided for movement on said table in a rectilinearpath 34. The wedge heel block 20 is manually positioned on the carrierslide 28 with its rear end and its left side in engagement with back andside gages 36, 38, respectively, after which electrically `controlled,uid pressure operated means is rendered active, in response to manualactuation of a knee pad 40, to cause the clamp 30 to be forced againstthe block on the slide. Movement of the clamp 30 toward the wedge heelblock 20 positioned in the machine automatically renders hereinafterdescribed vactuating mechanism for the carrier slide 28 effective, aftera suitable time delay, to cause said slide to move to the right asviewed in Figs. l, 6 and- 7 with the result that the block, moving insaid rectilinear path 34, traverses a tool 42 comprising front and rearcutters 42a, 42h, respectively, to trim the block to the proper lengthand to form the rabbet or notch 24. The cutters 42a, 42h which havelongitudinal and transverse cutting edges 44a, 45a; and 44h, 45b,respectively,vare mounted upon a shaft 46 rotatable in a bearing housing48 secured to a bracket 50 bolted to the upper end of a fixed frame orpedestal 52 (Figs. l, 2 and 3). The tool 42, which is secured in clampedrelation against a flange of the shaft 46 by a nut 54, may be describedas comprising trimming and rabbeting cutter portions 42a, 4217respectively.

During a projective or trimming stroke of the carrier slide 28 in therectilinear'path 34 an ejector 56 mounted on the slide is springenergized or loaded and as the carrier slide approaches the end of thisstroke a deector arm 58 secured by screws 60 to said slide operates aplunger 62 of an impulse switch 64 having contacts 64a (Fig. l0)causing, by the provision of means hereinafter described, the clamp 30to be raised away from the wedge heel block 20a on the slide thusenabling said block to be moved by the ejector from the carrier slideand intov a suitable container (not shown). Immediately after thedeiiector arm 58 engages the plunger 62 it engages a plunger 66 (Figs. 7and 10) of an impulse switch '68 which has contacts 68a and isoperatively connected to mechanism hereinafter described causing thecarrier slide to be moved on the table 32 back to a retracted orstarting position shown in Figs. l, 6 and 7.

The machine is powered by closing a switch to cause a primary coil 67 ofa transformer T to be energized thus energizing a secondary coil 67a ofthe transformer. LThe tool 42 is powered by a motor 69 (Fig. l)operatively connected by a belt 71 to the tool shaft 46. The motor 69 isstarted in response to closing of a switch 73. -As a safety measurethere is also provided a switch which may be readily opened by theoperator in the event that it is desirable to stop movement of thecarrier slide 28 during its cycle and in order to cause the wedge heelblock 20 or 20a to be unclamped at any time during the cycle of themachine there is provided a switch 72 which may be readily closed by theoperator.

The impulse switches 64, 68, as well as hereinafter referred to vimpulseswitches 220, 222 and 280, electrically interconnected, as shown in theWiring diagram (Fig. l0), to solenoid valves 227, 252 hereinafterdescribed, may have the general form of an impulse switch 51 such as isshown in Fig. 1l. Such a switch comprises a housing 53 provided with arectilinear bore 55 for receiving a plunger 57, said plunger beingnormally held in its idle or retracted position against a stop face 59of the housingby a spring 61. Fixed to the housing 53 is a pi11263`whichpasses through elongated slots 75 formed in a lever 77 upon which a roll79 is rotatably mounted and which is normally held by a spring 81 in itsposition shown in Fig. ll with the lower ends of the slots in jengagement with the pin 63, said roll when the plunger is in its idleposition normally engaging in a circular channel 83 formed in theplunger. Slidable in a box 85 screwed to the housing 53 is a plunger 87which, when depressed as viewed in Fig. ll against the action of aspring (not shown), bridges contacts 89 of the switch. The plunger 57has also formed in it a wide circular channel 91 which is separated fromthe circular channel 89 by a land 93. When the plunger 57, whichcorresponds to the plungers of the above-mentioned impulse switches, ismoved against the action of the spring 61, the lever 77 is swungclockwise about the pin 63, which is then in engagement with the lowerends of the slots 75, causing the plunger 87 to be moved across thecontacts 89 against the action of the above-mentioned spring (notshown). As the plunger 57 moves back to its retracted position under theaction of the spring 61 a shoulder at one side of the land 93 causes thelever 77 to be moved against the action of the spring 81 to a positionin which the upper ends of the slots 75 are in engagement with the pin63, the lever at this time being cammed away from the plunger 57, theconstruction and arrangement being such that the roll 79 at this timedoes not have snicient outward swinging movement imparted to it to causethe lever 77 to be swung against the plunger 87 during retractivemovement of the plunger 57. As the land 93 of the plunger 57 moves pastthe roll 79 of the lever 77 during refractive movement of the plunger,the lever acted upon by the spring S1 is moved to its idle or startingposition shown in Fig. l1 ready, upon movement of the plunger 57 fromits idle position, to be forced instantaneously across the contacts 89.The above-mentioned solenoid valves 227, 252 may be of any well-knowncommercial construction, one type of valve which may be effectively usedfor this purpose, for example, being disclosed in United States LettersPatent 2,641,229, granted Iune 9, 1953 on an application tiled .l

in the name of Louis F. R. Bellows.

The carrier slide 28 is provided with a bore 74 (Figs. 3 and 7)slidingly fitting on a guide rod 76 secured at its end portions to crosspieces of the table 32 which include ways 78 having flat upper faces 80engaged by at lower faces 82 (Fig. 3) of the carrier slide. The table32, which may be described as including the guide rod 76, comprisesbosses provided with alined bores 84 for receiving trunnions 36 securedby screws 88 to a vertical l bearing plate 90 which may be movedvertically or trans- I versely of an axis of rotation 155 of the tool 42into different adjusted positions upon an adjustable frame 92. The guiderod 76 has mounted on it a bumper spring 94 the right end of which, asviewed from the front of the machine, engages a stop nut 96 threadedonto a portion of said rod. The axes of the trunnions 86 may bedescribed as being disposed at right angles to the axis of rotation 155of the tool 42 and as located at one side of said tool.

The adjustable frame 92 has a vertical apron portion 98 and a box-likeportion 100 (Figs. 2, 3 and 6) lateral sides of which are provided withguideways 192 adapted to receive slidingly bearing anges 194 of thepedestal 52. The apron portion 98 of the adjustable frame 92 hasrotatably supported by it a screw 106 which comprises a hand wheel 108and is threaded into the bearing plate 90. In order to guide the bearingplate 90 in a vertical path during its adjustment, this plate has formedin it a channel 111 for receiving a rib 113 (Fig. 6) of the verticalapron portion 98 of the frame 92, the plate also having formed in itslots in which iit guide screws 112 threaded into said apron portion 98.The screws 112 have threaded onto them nuts 114 which are loosenedpreparatory to adjusting the bearing plate vertically and which arethereafter tightened to maintain this plate in its `desiredy adjustedposition. The table 32 may be raised .4 or lowered to its desiredoperating position in accordance with the depth of the rabbet 24 to beformed on the wedge heel block 20, by loosening the nuts 114 androtating the hand wheel 108 until the table is at its proper height, thenuts thereafter being tightened to retain the bearing plate in itsadjusted position.

In order initially to move the apron portion 98 of the adjustable frame92 forwardly and rearwardly or lengthwise of the axis of rotation 155 ofthe tool 42, that is, in the directions 116 (Fig. 3) to vary theposition of the trimming cuts lengthwise of the wedge heel block 20,this frame has rotatably mounted in it a hand screw 118 (Fig. 2)threaded into the pedestal 52. The adjustable frame 92 and the pedestal52 are provided with alined bores for receiving a bolt 120 havingthreaded on it a nut 122 which, after initial adjustment of this frame,may be tightened to bind the frame in its desired position on thepedestal 52.

Secured by screws 124 (Figs. l and 6) to the table 32 is a dependingplate 126 having a rectilinear channel 128 for receiving a portion of asupport 132 to which are secured the switches 62, 64, respectively,which may be referred to as unclamping and limit stop switches. Securedto and extending from the support 132 is a screw 134 which extendsthrough a slot 136 in the depending plate 126 and has threaded onto it awing nut 13S. Rotatably mounted in a rearwardly extending portion of thedepending plate 126 is a screw 140 which is threaded into the support132 and may be initially rotated after loosening the wing nut 138 toadjust the support to a desired position lengthwise of the channel 128,said nut being subsequently tightened to maintain this adjustment. Withsuch a provision it will be noted that the length of the trimming strokeof the carrier slide 28 and thc point in the stroke in which the clamp30 releases the heel block 20a may be varied.

The table 32 is provided with bores for receiving a pin 142 upon whichis pivotally mounted a multipart rod 144 comprising a turnbuckle 146 andprovided with an elongated slot 148 (Figs. 3 and 6) in which ts ashoulder screw 150 threaded into the vertical bearing plate 90. In orderinitially to set the table 32 at the desired angular position upon thetrunnions 86, in accordance with the desired angle of the door 26 of therabbet 24 with relation to the planar bottom of the wood heel block, theoperator grasps a handle 152 secured to the table and after looseningthe shoulder screw 150 swings the table approximately to the angularposition it is to occupy and thereafter takes up on the shoulder screwin order yieldingly to lockthe lower end of the rod to the bearing plate90. The turnbuckle 146 is then rotated until the table 32 is arranged atthe desired angle which is to produce the desired cut, the shoulderscrew 150 then being nally forced against the bearing plate 90 in orderto maintain said table against movement. Nuts 1.54 on the threadedportion of the rod 144 are rotated into forced engagement with theturnbuckle to maintain the turnbuckle in its proper adjusted position.In order to facilitate setting the table 32 at the proper angle, saidtable may have secured to its pointer 151 (Fig. l) arranged adjacent toa scale 153 which has angular cali- `brations and is secured to thevertical bearing plate 90.

The tool 42 may be described as comprising a front or rabbeting cutterportion 42a provided with the cutting edges 44a, 45a which are spacedcircumferentially about the axis of rotation 155 (Figs. l and 3) of theshaft 46, the cutting edges 44a being arranged parallel to said axis andforming a locus having the form of a cylinder 157, and a rear or heeltrimming cutter portion 42h provided with cutting edges 441), 4511,which are spaced circumferentially of said axis, the cutting edges 441;being arranged parallel to said axis and forming a locus having the formof a cylinder 159.

The carrier slide 28 has secured to it by screws 156 (Figs. 3 and 7) ablock supporting Aplatform 158 and 'fitting in 'a1groove160' in saidplatform is `the back vgage 36 which comprises a. metallic spring plateor work en- .f'gaging portion 162 and may be secured to theplatform `158in different adjusted positions lengthwise of the A groove 160 by theuse of a screw 164 extending through a` s1otf166 in the gage andthreaded into the platform. `The position of the back gage 36 in thegroove 160 ymay be readily determined by suitable calibrations formed onthe platform 158 and the back gage. Secured to an `upstanding iiange ofthe carrier slide 28 and overlying a portion of 4an upper or heelsupporting face 168 of the `wedge heel supporting platform 158 is theedge gage 38 which is preferably made of fibre and is provided with arecess 170 housing, -when the machine is idle, a work engaging portion172 of the ejector. When it is desired to'form rabbets 24 in Wood heelblocks, which are "already cut to the proper lengths, the back gage 36may i be omitted and a breast gage (not shown), which is normally fixedto but adjustable on the vertical bearing plate 90, may be provided. Forreasons which will appear later the spring plate 162 is yieldableheightwise of the heel block 20 being positioned on the carrier slide 28and is nonyieldable lengthwise of the block and is adapted `to vbeengaged by the rear end of said block to position the block lengthwiseon the platform 158.

Threaded itno the carrier slide 28 is a bearing pin -.174 and supportedby said slide and journaled on the pin `is anarm 176 carrying a cam rollor follower 178. Supported by the `arm 176 and fulcrumed on the pin 174is-the ejector 56 a shoulder 180 of which, when the machine is at rest,is forced against a screw 182, which is threaded into a boss of thearm,lby the action of a spring 184 (Fig. 7) opposite ends of which areattached to the arm and to a pin extension of the ejector. The arm 176,

which -may be referred to as an actuating ar-rn, is constantly urged orbiased counterclockwise, as viewed-in Fig. 7, by a spring 186,counterclockwse movement ofthe. arm being limited by the engagement ofthe screw 182 with the shoulder 180 of the ejector 56 after `the workengaging portion 172 of the ejector has been moved into engagement withthe bottom of the recess 170 of the 'side gage 38. The bottom of therecess 170 may be defined as a stop or stop face.

Secured by screws 188 to the carrier slide 28 -is a cam 190 having aface 192 which, during movement of Vthe slide to its projected positionis engaged by the follower roll 178 on the arm 176 causing said arm toswing clockwise (as viewed from above) on said slide. It will be notedat this time that the wedge heel block v20 is clamped securely on thecarrier slide 28 and accordingly `the ejector 56 is held between theblock clamped to the tainer (not shown) as above explained. When theejector 56 is in its position shown in Fig. 7 it may be described asbeing in its inactive or unenergized position. The screw 182 carried bythe arm 176 and the shoulder 180 of the ejector 56 may be defined asabutments of the arm and the ejector.

l Mounted upon and secured to the carrier slide 28 is an air cylinder194 having reciprocable in it a piston 196 an upper end portion of whichhas operatively connected to it a lever 198 fulcrurned on a pin 200secured to upstanding lugs of the slide. Threaded into the right end ofthe lever, as viewed in Fig. 6, is a pair of clamp screws 202 whichconstitute the clamp 30 and have their lower ends initially set indifferent adjusted positions upon this lever in accordance with theshape ofthe wedge heel v4block 20 to be operated upon. As will beexplained later,

the piston 196 is raised inthe cylinder 194 by-liuid under 'pressuresupplied to a chamber 204, which is formed by the cylinder 194 and thepiston, through a line 206, said piston being constantly urged to alowered or inactive position against the lower end of the cylinder by aspring 208.

The knee pad 40 is mounted on an arm 210 (Figs. l, 8 and 9) fulcrumed at212 on a iiange of an angle plate 214 welded to a collar 216 secured toa rod 218 iixed to the pedestal 52. Secured to the outer end of theangle plate 214 are normally open impulse switches 220, 222 (Figs. l, 8and l0) comprising plungers 224, 226, respectively, adapted, when movedpredetermined distances from their idle positions against springs (notshown) of the switches, to be moved across contacts 220a, 222a (Fig. 10)of the switches, said plungers being moved back by said springs to theirinitial or raised positions without bridging their associated terminals.The arm 210 is constantly urged clockwise, as viewed in Fig. 8, by aspring 228 (Fig. 8), this movement of the arm being limited by theengagement of a nut 238, which is threaded onto a screw 232 secured tosaid arm and which extends through a bore 234 of a depending ange of theangle plate 214, with said depending flange. Counterclockwise movementof the arm 210 (Fig. 8) is limited by the engagement of a nut 236threaded onto the screw 232 with the depending iiange of the angle plate214. As will be hereinafter explained, the machine is operatedautomatically through its cycle by moving the arm 210 to the right, asviewed in Fig. 1, by the action of the operators knee against the pad40, this movement being effective to slide to the right the plunger 224of the inipulse switch 220 causing the terminals 22th:y of this switchto be bridged. It will be noted at this point that the operator commonlymoves his knee against the pad 40 withonly sufficient pressure tooperate the impulse switch 1220,. counterclockwise movement of the pad,as viewed in Fig. 8, ceasing before the plunger 226 of the impulse-switch 222 has been moved suiiiciently to cause the contacts 222a ofthe switch to be bridged, the limit switch 222 being providedto effectreversal of the carrier slide 228 as will appear later. The operator canreadily feel when he encounters spring resistance of the plunger 226 andat this time releases the knee pad 4i), this plunger returning to itsidle position, without causing the contacts 222 to be bridged, throughmechanism which is disclosed in vdetail in connection with theillustrative impulse switch 53, for example.

The causing of the contacts 220a of the impulse switch 220 to be bridgedin response to movement of the plunger 224 of the switch causes a slidebar 225 (Fig. l0) of a solenoid valve 227 to move to a dash lineposition with the result that the iiuid in a high pressure line 229 isavailable for the line 2% leading to the chamber 284 formed by the aircylinder 194 and the piston 196. When the switch 72 is closed and whenthe plunger 62 of the impulse switch 64 has caused the contacts 64a ofthis switch to be bridged by reason of the engagement of this plunger bythe deilector arm S8 of the carrier slide 28, the slide bar 225 of thesolenoid valve 227 is moved from its dash line position to its full lineposition closing the high pressure line 229 off from the line 206 andopening the chamber 284 to an exhaust line 237' thus allowing the spring268 to move the piston 196 to a position in which the clamp screws 202are raised.

Secured to and carried by the left end of the carrier slide 28 (Fig. l)is a piston 238 reciprocable in a bore 24@ of an air cylinder 242secured'to an upstanding ange of the table 32, said piston in its idleor inactive position being held as shown in Fig. l against a left end ofthe cylinder. Fluid under pressure is available for faces 244, 246 ofthe piston 238 through lines 248, 250 which are alternately connected tothe pressure line 229 and .to exhaust lines hereinafter referred to.

Mountedonthe left end of the cylinder 242 is a solenoid valve 252 havingmovable in it a`slide-bar'-254 which is moved between a dash lineoperating position in which the line 229 and an exhaust port 255 areopen, respectively, to the lines 248, 250 and accordingly to the faces244, 246, respectively, of the piston 238 causing said piston to movethe wedge heel block 20 past the tool 42, and a full line position inwhich the high pressure line 229 and an exhaust port 255a are open tothe lines 250, 248 and accordingly to the faces 246, 244, respectively,of the piston to move this piston to the left (Fig. from its projectedto its retracted or starting position shown in Figs. 1 and 10 and tohold it there.

As the lever 198 is moved clockwise (Figs. l and 6) to clamp the wedgeheel block in the carrier slide 2S, a roll 256 (Figs. l, 6 and 7), whichduring the clamping action of the lever 198 swings an arm 258 fulcrumedon a housing of a pilot valve 260 counterclockwise, causes a slide bar262 (Fig. 6) of this valve to admit to to a line 264 iiuid under highpressure from the pressure line 229. T he line 264 is coupled to a timedelay valve 268 communicating with a face 270 (Fig. 10) of a piston 274slidable in a cylinder 272, said piston being constantly urged to theright (Fig. 10) by a spring 276. Movement of the piston 274 to the leftas viewed in Fig. l0 (to the right as viewed in Fig. 1) causes a plunger278 of an impulse switch 280 to be moved across contacts 280:1 of thisswitch and accordingly causes the slide bar 254 of the solenoid valve252 to be moved into said dash line position in which, as aboveexplained, uid under high pressure and fluid under exhaust pressure isavailable, respectively, for the faces 244, 246 of the piston 238 withthe result that the carrier slide 23 is moved to the right as viewed inFigs. l, 6 and 7 to move the wedge heel block 20 clamped to said slidepast the cutting tool 42 to remove material from the forward end of theblock and to form the rabbet 24 at the forward portion of the shank or"said block.

In the operation Vof the machine the operator manually places theforward end of the wedge heel block 20 upon the flat upper face 168 ofthe platform 158, the left side of said block being in engagement withthe side gage 38, and depresses and slides the block rearward until itsentire bottom face has been moved onto Said upper face o'f the platformand beneath the then raised clamp screws 202 as well as beyond or behindthe spring or work engaging portion 162 of the back gage 36. The block20 is then slid forwardly on the face 168 of the platform 158 with itsleft side engaging the side gage 38, until the rear end of the block hasbeen moved into engagement with said spring portion 162, to its positionshown in Figs. l, 3, 6 and 7. When the wedge heel block 20 has beenproperly positioned in the machine the operator while manu- :allymaintaining the block in position, moves the knee pad 40 to the right(Fig. l) causing the Acontacts 22Go of the normally open impulse switch220 to be bridged and accordingly the slide bar 225 of the solenoidvalve 227 to move from its full line position to its dash line positionin which iluid under pressure in the line 229 is admitted to the line206 with the result that the piston 196 is raised in opposition to thespring 208 and the clarnp screws 202 are lowered with substantialpressure against the positioned wedge heel block 20.

As the piston 196 is raised the roll 256 carried by the lever 198 isforced agains't the arm 258 causing the slide bar 262 of the air pilotvalve 260 to be moved from its full line position to the left as viewedin Fig. 6 in which iiuid under pressure is admitted from the highpressure line 229 to the line 264 leading to the time delay valve 268`and thus to the face 270 of the piston 274. High pressure uid operatingagainst the face 270 lof the piston 274 moves said piston against theaction of the spring 276 causing the contacts 280a of the impulse switch280 to be bridged with the result that the slide bar 254 of thesolenoidvalve is moved from its full line position toits dash-lineposition causing fluid under pressure from y.the line 229 to beavailable for the face 244 of the piston 238 and the face 246 of thepiston to be open to the eX- haust line 255. Movement of the piston 238and..ac cordingly the carrier slide 28 and the wedge heel block 20 tothe right, as viewed in Figs. l, 6 and 7, causesmaterial to be trimmedlfrom the forward end of the block and the notch or rabbet 24 to beformed in the shank of the block by the cutters 4211 and 42a,respectively, ofthe tool 42. f

When the carrier `slide 28 has moved to the right as viewed in Figs. 1,6 and 7 to a position in which the'deflector arm 58 of the carrier slide28 has moved the plunger 62 sufficiently to cause the contacts 64a ofthe impulse switch 64 to be bridged, the slide bar 225 of the solenoidvalve 227 is moved from its dash line to its-full line position in whichthe `line 206 is cut off from the high pressure fluid line 229 and inwhich the chamber 204 is open to exhaust with the result that thespring-208 moves the piston 196 to its lowered position in the cylinder194 and accordingly the wedge heel block l20a is unclamped thus allowingthe then spring loaded ejector'56 to remove the block 20a from thecarrier slide. Simultaneous with the release of the wedge heel Iblock20a from the carrier slide 28 the defiector arm 58 depresses the plunger66 causing the contacts 68a of the normally open impulse switch 68 to bebridged and thus causing the slide bar 254 of the solenoid valve 252 tobe moved back to its full line starting position in which the face 246of the piston 238 is open to the high pressure line 229 and the face244of the piston is connected to exhaust line 255a, the piston andaccordingly the carrier slide being moved back to their startingpositions determined by the engagement of the piston with the Ileft end(Fig. 1) of the cylinder 242.

In order to insure that when the starting `switch is closed the machine`cannot be started duringvthe time, lfor example, that repairs are beingmade, the arm 210 which carries the knee pad 40 has secured to it a lug282 (Figs. 8 and 9) provided with a recess 284 for receiving aspringpressed detent 286 pinned to a rod 288 slid-able in a bore of aholder 290 screwed to the angle plate 214. The holder 290 is providedwith a slot 292 a bottom of which is engaged by a flat head portion ofthe rod 288 when said rod is in its active position shown in Figs. 9 and10. With the rod 288 in its active position shown in Figi 9 the arm 210cannot be moved sufficiently to 'actuatethe plunger 224 of the switch220. The rod 288 maybe moved to an inactive position by moving the athead portion thereof out of the slot 292 yand turning it about 90.

As above explained, there is also provided the switch 70 which whenopened insures against movement of the carrier slide 28 and in orderthat the operator may release the clamp 30 at any stage in the cycle ofthe machine the switch 72 may be closed.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. In a machine of the class described, a rotary cutting tool, a guide,a carrier slide mounted for movement upon the guide, means forpositioning a heel block on the carrier slide, power means for clampingthe positioned block upon said slide, and power means rendered active inresponse to the clamping movement of the first-named power means formoving the carrier slide past the tool to cause material to be removedfrom the block.

2. In a machine for use in the manufacture 'of heels, a cutting tool, aguide positioned adjacent to the tool, a carrier `slide mounted fortranslatory movement in a predetermined path on said guide, means forpositioning a heel block on the carrier slide, power 'operated means forclamping the positioned block to said slide, power operated meansrendered'active in` responsetooperation of said block clamping meansformoving'lthe carrier slide in said path onthe guide whereby'tomovethe' rblock past the cutting tool to remove material lfrom said fblock,means responsive to movement of the slid-e in said path for unclampingthe heel fblock yfrom the carrier slide after the block has been'operatedupon by the tool, and means for ejecting the unclampedblock fromthe carrier slide.

3. In a machine for usefin the manufactureof heels, a rotary cuttingtool, a guide positioned adjacent to the tool, a carrier slide mountedon the guide for translatory movement in opposite directions in apredetermined path, uid pressure means for moving the carrier slide insaid path, means Vfor positioninga heel block on the slide, fluidpressure means for clamping the block to the slide, a time delay valve,a plunger open to the time delay valve, a switch, a solenoid valve, apilot valve operative in response to operation of said block clampingmeans to cause uid under pressure to be admitted to the time delay valveand accordingly to the plunger to operate the switch and accordingly thesolenoid valve -thereby rendering said first-named tluid pressure mean-sactive to move on the guide the carrier slide from a retracted to apr-ojected position whereby to move the block past the cutting tool toremove material from said b1ock,`means responsive to said movement ofthe carrier slide for unclamping the heel block from the slide aftersaid |block has been operated upon by the tool, means for ejecting theblock from the carrier slide, and meansV responsive to movement of thecarrier slide to its projected position for rendering the first-nameduid pressure means effective to return the carrier slide to itsretracted position.

4. In a machine of the class described,arotary cutting tool, a guide, acarrier slide mounted for movement upon the guide, means for positioninga heel block on the carrier slide, power means for clamping the'positioned block upon said slide, Vpower means operative'in response tothe cl-amping movement of the rst-named power means for moving from astart-ing' position the carrier slide past the tool to `cause materialto be'removed from the heel block, an ejector, means for biasing theejector against the block clamped to the carrier slide, means responsiveto movementof the carrier slide on the guide past said tool to apredetermined position for releasing said clamp whereby to render saidbiased ejector effective to discharge the heel block from ythe carrierslide, and means responsive to movement of the carrier slide to apredetermined `position past thev cutting tool for rendering saidsecond-named power means eiective to move the carrier slide ba'ckto itsstart-ing position on the guide.

5. In a machine of the class described, a tool comprising trimming andrabbeting cutter' portions, a carrier slide, means for positioningrespectively a wedge heel block lengthwise and widthwise on the slide,aclamp mounted upon the carrier slide and adapted to retain thepositioned heel on said slide, .a manually actuated'fmember, poweroperated means which isrendered active in response to movement of saidmember and is adapted to force the clamp against the block, poweroperated means for reciprocating the carrier slide, means lresponsive tothe clamping of the wood heel block to the'carrier slide for initiatingmovement of the carrier slide reciprocating means in one direction froma starting position to cause said block to traverse the tool with theresult "that material is removed from the forward end of the block bythe trimming cutter portion of the t-ool to trim said block to thedesired length and a rabbet is formed at the forward portion of theshank of the rbloclcby the rabbeting cutter portion of the tool, anejector, means for loading the ejector, power means responsive tomovement of the carrier slide to a predetermined position in said onedirection for causing said first-named power operated means to move theclamp away from the -block thereby permitting the loaded ejector to`force the block otfrthe carrier slide, and means responsive to movementofthe "carrier slide to a predetermined position for vcausing the poweroperated carrier slide reciprocating m'eansto elect movement of theslide in a reverse direction causing said slide to return to itsstarting position.

6. In a machine of the class described, a toollcomprising trimming andrabbeting cutter portions, a carrier slide, back and side gages forvpositioning'respectively'a wedge heel block lengthwise and widthwise ronthe slide, a clamp mounted upon the carrier slide'and adaptedv to retainthe positioned heel block on said slide,` a manually actuatedmember,`power operated means-which -is rendered active in response tomovement of said member and is adapted to force the clamp againsttheblock, power operated means `for reciprocating -the ca'rrierslide, meansresponsive to the clamping of thewood-iheel block to the carrier slidefor initiating movement of -the carrier slide reciprocating means in onedirection' froma starting position to cause said block to traverse vthetool `with the result that the trimming cutter portion of-the toolremoves material from the forward end of the block-'to trim said blockto the desired length and the rabbeting cutter portion of the tool formsa rabbet at the VVforward portion of the shank of the block, a springactuated ejector mounted on the carrier, means responsive to movement ofthe carrier slide 4in `one direction for loading the ejector, powermeans responsive to movement of the carrier slide to a predeterminedposition in said one direction for causing said first-named poweroperated means to move the clamp away from the block thus permitting theloaded ejector to force the block oi the carrier slide, and limit switchmechanism responsive to movement of the carrier slide to a predeterminedposition for `causing the power operated carrier slide reciproeatingvmeans to effect movement of the slide in a reverse direction to returnsaid slide to its` start-ing'position.

'7. In a machine for use in the manutacturefof heels, a cutting `tool`which is rotatable about an'axis, a guide positioned adjacent to thetool, a :carrier slide mounted for translatory movement in apredetermined path Yon said guide, an ejector, aside gage which isadaptedlto position the heel block to be operated upon widthwise on theslide and which has formed in it a recess for receiving the ejector, aexible metallic back gage which is yieldable heightwise of the blockbeingl positioned Von the carrier slide and which is nonyieldablelengthwise of said block and is adapted to be engaged by therear end ofthe heel block to position it lengthwise on the carrier slide, powermeans for clamping the block to lthe carrier slide, power meansresponsive to movementof said block clamping means for moving thecarrier slide in said path on the guide whereby to move the block pastthe cutting tool to trim material Ifrom said. block, means Iresponsiveto movement of the carrier slide in said path for spring loading theejector to fforce the same against the heel block clamped to the carrierslide,and means responsive to movement of the carrier slidein said pathfor unclamping the block from the carrier slide after the block has beenoperated upon by the tool, said ejector, when the block has beenunfclamped, being rleidered etfective to move the block @from thecarrier s 1 e.

8. In a machine *for use in the manufacture of wedge heels, a fixedframe, a cutting tool rotatable in said xed frame for movement about anaxis, an adjustable tframe, means for initially moving on said fixediframe the adjustable frame into different operating positions generallylengthwise of said axis, a bearing plate mounted on lthe adjustabletrame, means for initially moving the bearing plate on said adjustableiframe transversely of said axis `into different operating positions, aguide which is mounted on the bearing plate and is initially adjustableon said plate about an axis which is disposed at right angles to theaxis of rotation of the tool and is located at one side of said tool,means |for initially adjusting the guide into different angularpositions upon the bearing plate about said second-named axis, a carrierslide mounted for translatory movement in a predetermined path on theguide, means *for positioning a wedge heel block on the carrier slide,power means for yclamping the positioned block on the slide, manuallyactuated means for effecting operation of the power means to cause theblock to be clamped to the slide, and power operated means responsive tooperation `of said clamping means for moving on the guide the carrierslide in one direction in said path to cause the heel block to traversethe tool thereby trimming said block to the proper length and forforming a rabbet at the forward end of the shank of the block.

9. In a machine for use in the manufacture of wedge heels, a fixedframe, a cutting tool rotatable in said fixed frame for movement aboutan axis, an adjustable frame, means for initially moving on said iixedframe the adjustable iframe into different operating positions generallylengthwise of said axis, a bearing plate mounted on the adjustableframe, means for initially moving the bearing plate on said adjustableframe transversely of said axis into different operating positions, aguide which is mounted on the bearing plate and is initially adjustableon said plate about an axis which is disposed at right angles to theaxis of rotation of the tool and is located at one side of said tool,means for initially adjusting the guide into different angular positionsupon the bearing plate about said second-named axis, a carrier slidemounted for translatory movement in a predetermined path on the guide,means for positioning a wedge heel block on the carrier slide, powermeans for clamping the positioned block on the slide, manually actuatedmeans Ifor effecting operation of the power means to cause the block tobe clamped to the slide, power operated means responsive to operation ofsaid clamping means for moving on the guide the carrier slide in onedirection on said path to cause the heel block to traverse the toolthereby trim- Zming said block to the proper length and for forming arabbet at the 'forward end of the shank of the block, an ejector mountedon the carrier slide, means responsive to movement of the carrier slidein said one direction for loading the ejector, means responsive tomovement in said one direction of the carrier slide -to a predeterminedposition for rendering said lirst-named power means ineffective thuscausing said clamp to release the block and enabling the then loadedejector to remove the block from the carrier slide, and means responsiveto movement of the carrier slide in said one direction to apredetermined position ifor causing said second-named power means tomove the carrier slide in a direction opposite to said one direction toa retracted position on the guide.

10. In a machine for use in the manufacture of heels, a cutting tool, acarrier slide movable in a predetermined path relatively to the tool,means for clamping a heel block to the carrier slide, means for movingthe carrier slide in said path to cause material to be trimmed from theheel block, means for unclamping the heel block from the carrier slideas the carrier is moved in said path, an ejector, means comprising anactuating arm and a spring for holding the ejector adjacent to the heelblock positioned and clamped in the carrier slide, a second springoperatively connecting the actuating arm to the ejector, and meansresponsive to movement of the carrier slide in said path for moving saidactuating arm against the action of said springs whereby to load theejector against the heel block and to maintain said ejector loaded untilsaid heel block is unclamped, said ejector being free to force the heelblock from the carrier slide after said block has been unclamped.

l1. In a machine for use in the manufacture of heels, a cutting tool, acarrier slide movable in a predetermined path past the tool, means forclamping a heel block to the carrier slide, means for moving the carrierslide in said path to cause material to be trimmed from the block,

"means for unclamping the heel block from the carrier slide as it ismoved in' said path, an ejector mounted on the carrier slide, a springbiased actuator arm mounted on the carrier slide and adapted to move theejector to and maintain it in an inactive position on said slide, aspring connected to the ejector and to the arm, and means responsive tomovement ofthe carrier slide for moving said actuator arm against thelaction of said springs whereby to bias the ejector against the blockthen clamped to the carrier slide and to maintain it biased until afterthe heel has been unclamped from the slide, said block when unclampedbeing forced from said slide by the ejector.

12. In a machine of the class described, a rotary cutting tool, acarrier slide movable in a predetermined path past the tool, means forpositioning a wood heel block on the carrier slide, a stop mounted onsaid slide, a clamp for securing the positioned heel block on thecarrier slide, a pivot pin mounted on the carrier slide, an arm and anejector rotatably mounted on said pin, a spring for constantly urgingthe ejector to an unloaded position on said arm, resilient means forurging the arm and the ejector held in said unloaded position on the armin one direction as a unit about said pin to cause the ejector to bemoved against the stop, means responsive to movement of the carrierslide past the tool for rotating the arm relatively to the ejector, thenheld against movement by the clamped block, against the action of saidresilient means and said spring in a direction opposite to said onedirection whereby to cause the ejector to be spring loaded for rotationin said opposite direction against the then clamped heel block, andmeans responsive to movement of the carrier slide in said path forunclamping the block thereby allowing the ejector acted upon by thespring to eject the block from the carrier slide.

13. In a machine of the class described, a trimming tool, a carrierslide, means for positioning a heel block on the carrier slide, meansfor clamping said positioned block on said slide, a bearing pin securedto the carrier slide, an arm and an ejector which are journaled forindependent movement on said pin, `a screw threaded into the arm, a stopmounted on the carrier slide, a spring for constantly urging the armabout the pin in one direction, a spring which is attached to the armand to the ejector and is adapted to urge the ejector about the arm in adirection opposite to said one direction until stopped by its engagementwith said screw, said first-named spring being adapted to move about thepin in said one direction the arm together with the ejector which is inengagement with said screw until said ejector has engaged said stop,means for moving the carrier slide in a predetermined path to move theheel block past the tool, means responsive to movement of the carrierslide past the tool for swinging the arm in said opposite directionabout said pin to move the screw away from the ejector and for loadingthe second-named spring and thus causing the ejector to be forcedagainst the heel block then clamped to the carrier slide, and means forunclamping the block from said slide to allow the loaded ejector toforce said block from the carrier slide.

14. In a machine ofthe class described, a rotary cutting tool, a guidetable, a carrier slide mounted for translatory movement on the table,means for positioning a heel block upon and clamping it to the slide,means for moving said slide on the table in one direction to cause theheel block to traverse the tool whereby to trim material from the block,an ejector and an arm which are journaled upon the carrier slide formovement about a common axis, a cam roll 4mounted upon said arm,abutments formed respectively on the ejector and the arm, a springopposite ends of which are attached to the arm and to the ejector andwhich is adapted constantly to urge the abutment of the ejector againstthe abutment of the arm, a stop mounted on the carrier slide, a springwhich is adapted to urge the abutment of the arm against the abutment ofthe ejector and to force said ejector against said stop, a cam securedto the guide table, said cam roll being actuated by the cam during themovement of the carrier slide on the guide table in said one directionto move against the action of said springs the abutment of the arm awayfrom the abutment of the ejector and to cause the first-named spring tobe loaded whereby to force the ejector with considerable pressureagainst the heel block clamped to the slide, and means responsive tomovement of the carrier slide to a predetermined point in its travel insaid one direction on the guide table for releasing the clamp therebyenabling the ejector acted upon by said first-named spring to eject theblock from the slide.

15. In a machine for use in the manufacture of heels, a rotary cuttingtool, a guide table, a carrier slide mounted for translatory movement ina predetermined path on said table, uid pressure means for moving thecarrier slide in said path, means for positioning a heel block on thecarrier slide, clamp mechanism for securing the block to the carrierslide, a spring for constantly urging the clamp mechanism away from thecarrier slide, a switch, a solenoid valve, fluid pressure meansoperatively connected to the solenoid valve, manually actuated means forclosing said switch to cause said solenoid valve to be operated forrendering said second-named tuid pressure operated means active tooperate said clamp mechanism against the action of the spring andthereby to clamp the positioned heel block against the carrier slide, atime delay valve, a plunger open to the time delay valve, a secondswitch, a second solenoid valve, a pilot valve operative in responsiveto operation of said clamp mechanism to cause fluid under pressure to beadmitted to the time delay valve and to operate the plunger andaccordingly said second switch causing said second solenoid valve torender the rst-named uid pressure means active to move the carrier slidefrom a retracted to a projected position in said path and accordingly tomove the block past a tool to remove material from the block, a thirdswitch, means responsive to movement of the carrier slide to itsprojected position in said path for operating said third switch and thusto render the first-named solenoid valve active to cause thesecond-named Huid pressure means to release said clamp mechanism andaccordingly to allow said mechanism to be released from the block by theaction of the spring, a fourth switch, means responsive to movement ofthe carrier slide to its projected position for operating said fourthswitch and accordingly the second-named solenoid valve to cause thefirst-named uid pressure mechanism to move the carrier slide in areverse direction to its retracted position, and means for ejecting theblock from the carrier slide when said block has been released from theslide by said clamp mechanism.

References Cited in the le of this patent UNITED STATES PATENTS1,374,869 Winkley Apr. 12, 1921 1,839,228 Kinney Jan. 5, 1932 2,038,636Bradbury Apr. 28, 1936 2,573,692 Constantine et al. Nov. 6, 19512,712,661 Quirk et al. July 12, 1955 2,725,581 Pickford Dec. 6, 19552,739,324 Ponder et al Mar. 27, 1956 FOREIGN PATENTS 278,679 SwitzerlandFeb. 1, 1952 494,123 Canada June 30, 1953

